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In: Statistics and Probability

The inside diameters of bearings used in an aircraft landing gear assembly are known to have...

The inside diameters of bearings used in an aircraft landing gear assembly are known to have a standard deviation of σ = 0.002 cm. It is found that a random sample of 15 bearings has an average inside diameter of 8.2514 cm. Test the hypothesis that the mean inside bearing diameter is 8.25 cm, Use two side alternative and α = 0.05.

Solutions

Expert Solution

Solution-

from the information given z test is calculated to test the claim

◆ Test calculation and results-

by the above results null hypothesis Ho is rejected.

therefore, we have not enough evidence to support the claim that the mean inside bearing diameter is 8.25 cm.

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orchestra answered 2 years ago
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